California · Alameda County
Past Producer
Camp 9
Alameda County, California, United States
Manganese
Silica
⌖ Show on map
USGS source ↗
Commodities
Tertiary
Manganese, Silica
Commodity type
M
Materials
Other materials
Chert, Glaucophane, Psilomelane, Pyrolusite, Rhodochrosite
Economic & production
Development status
Past Producer
First production
1888
Discovery year
1886
Identification
Deposit ID
10162994
MRDS ID
M004659
Alternate names
Cummings,Merchant, Crocker PropertiesCummings
Region
NA
Data score
B
Coordinates
37.60351, -121.65413
References
CDMG,BULLETINS:152,1950,#76,1918,#125,1943 AND #140,1948USBM R.I 5579,1960